解决困难的不完整类型错误

Question

尝试编译我的代码时出现不完整的类型错误。我知道它与包含有关，但我的项目很大，它使用了几个模板，所以我找不到哪种类型实际上是不完整的。错误信息也没有帮助：

Compiling: ../../../addons/ofxTableGestures/src/Graphics/objects/CursorFeedback.cpp 
In file included from ../../../addons/ofxTableGestures/ext/boost/fusion/include/invoke_procedure.hpp:10, 
       from ../../../addons/ofxTableGestures/src/oscGestures/tuioApp.hpp:46, 
       from /home/thechaos/Projectes/of_preRelease_v0061_linux_FAT/addons/../apps/OF-TangibleFramework/ofxTableGestures/src/Graphics/objects/CursorFeedback.hpp:35, 
       from /home/thechaos/Projectes/of_preRelease_v0061_linux_FAT/addons/../apps/OF-TangibleFramework/ofxTableGestures/src/Graphics/objects/CursorFeedback.cpp:31: 
../../../addons/ofxTableGestures/ext/boost/fusion/functional/invocation/invoke_procedure.hpp: In function ‘void boost::fusion::invoke_procedure(Function, const Sequence&) [with Function = void (tuio::CanBasicFingers<Graphic>::*)(long int, float, float, float, float, float), Sequence = boost::fusion::joint_view<boost::fusion::joint_view<boost::fusion::iterator_range<boost::fusion::vector_iterator<const boost::fusion::vector6<long int, float, float, float, float, float>, 0>, boost::fusion::vector_iterator<boost::fusion::vector6<long int, float, float, float, float, float>, 0> >, const boost::fusion::single_view<tuio::CanBasicFingers<Graphic>*> >, boost::fusion::iterator_range<boost::fusion::vector_iterator<boost::fusion::vector6<long int, float, float, float, float, float>, 0>, boost::fusion::vector_iterator<const boost::fusion::vector6<long int, float, float, float, float, float>, 6> > >]’: 
../../../addons/ofxTableGestures/src/oscGestures/tuioApp.hpp:122: instantiated from ‘void tuio::AlternateCallback<C, M, E>::run(tuio::TEvent*) [with C = tuio::CanBasicFingers<Graphic>, M = void (tuio::CanBasicFingers<Graphic>::*)(long int, float, float, float, float, float), E = tuio::TeventBasicFingersMoveFinger]’ 
/home/thechaos/Projectes/of_preRelease_v0061_linux_FAT/addons/../apps/OF-TangibleFramework/ofxTableGestures/src/Graphics/objects/CursorFeedback.cpp:64: instantiated from here 
../../../addons/ofxTableGestures/ext/boost/fusion/functional/invocation/invoke_procedure.hpp:88: error: incomplete type ‘boost::fusion::detail::invoke_procedure_impl<void (tuio::CanBasicFingers<Graphic>::*)(long int, float, float, float, float, float), const boost::fusion::joint_view<boost::fusion::joint_view<boost::fusion::iterator_range<boost::fusion::vector_iterator<const boost::fusion::vector6<long int, float, float, float, float, float>, 0>, boost::fusion::vector_iterator<boost::fusion::vector6<long int, float, float, float, float, float>, 0> >, const boost::fusion::single_view<tuio::CanBasicFingers<Graphic>*> >, boost::fusion::iterator_range<boost::fusion::vector_iterator<boost::fusion::vector6<long int, float, float, float, float, float>, 0>, boost::fusion::vector_iterator<const boost::fusion::vector6<long int, float, float, float, float, float>, 6> > >, 7, true, false>’ used in nested name specifier 

如果我将冲突代码复制到同一个文件，我可以编译它。所以我知道代码本身是好的，问题是我实例化它的方式。

如何跟踪这个错误的根源？有没有办法获得C++编译器和预处理器的踪迹以获取更多信息？

编辑：我用gcc 4.4.1

Answer 1

，如果你给我们的编译器会更容易些。

在gcc您可以使用-E选项看到处理后的文件。如果您尝试编译预处理文件，它应该更容易诊断。此外，你会看到究竟是什么类型。

至于具体的错误，最后一行通常表示一个：

boost::fusion::detail::invoke_procedure_impl< 
    void (tuio::CanBasicFingers<Graphic>::*) 
     (long int, float, float, float, float, float), 
    const boost::fusion::joint_view< 

    boost::fusion::joint_view< 
     boost::fusion::iterator_range< 
     boost::fusion::vector_iterator< 
      const boost::fusion::vector6<long int, float, float, float, float, 
       float>, 
      0 
     >, 
     boost::fusion::vector_iterator< 
      boost::fusion::vector6<long int, float, float, float, float, float>, 
      0 
     > 
     >, 
     const boost::fusion::single_view< tuio::CanBasicFingers<Graphic>* > 
    >, // joint_view 

    boost::fusion::iterator_range< 
     boost::fusion::vector_iterator< 
     boost::fusion::vector6<long int, float, float, float, float, float>, 0 
     >, 
     boost::fusion::vector_iterator< 
     const boost::fusion::vector6<long int, float, float, float, float, 
      float>, 
     6 
     > 
    > // iterator_range 

    >, 
    7, 
    true, 
    false 
> 

好了，所以这里重新格式化有点帮助。

看来你有一个命名空间tuio它应该包含一个模板类CanBasicFingers你想它的使用Graphic instanciation并获得一个指向一个成员函数。

假设您已包含所有Boost.Fusion包括权利，则可能是CanBasicFingers或Graphic未正确包含。

否则，查找在迭代器的常量性混合物：所述范围与一个const和非常量迭代这简直是奇怪定义的每个。

你应该尝试并分别调用它们。

作为诊断一般TECHNIC，我只能建议Divide And Conquer方法。你应该尝试一点一点积累的表达：

namespace fusion = boost::fusion; 

// First 
typedef void (tuio::CanBasicFingers<Graphic>::* function_t) 
    (long int, float, float, float, float, float); 

// Second 
typedef fusion::vector6<long int, float, float, float, float, float> vector_t; 

// Third: the iterators 
typedef fusion::vector_iterator< const vector_t, 0 > const_iterator_begin; 
typedef fusion::vector_iterator< const vector_t, 6 > const_iterator_end; 

typedef fusion::vector_iterator< vector_t, 0 > iterator_begin; 
typedef fusion::vector_iterator< vector_t, 6 > iterator_end; 

// Fourth: the ranges 
// (which const-ness are oddly messed up) 
typedef fusion::iterator_range< const_iterator_begin, iterator_end > range_1; 
typedef fusion::iterator_range< iterator_begin, const_iterator_end > range_2; 

// Fifth the views 
typedef const fusion::single_view<tuio::CanBasicFingers<Graphic>*> single_view; 
typedef fusion::joint_view< range_1, single_view > joint_view_internal; 
typedef fusion::joint_view< joint_view_internal, range_2 > joint_view_external; 

// and here is the final type (aaaah!) 
typedef fusion::detail::invoke_procedure_impl< 
    function_t, 
    joint_view_external, 
    7, 
    true, 
    false 
> procedure_type; 

编译这个分解的形式，应该在更精确的位置:)

Answer 2

类型似乎是（从错误中的最后一行）：

boost::fusion::detail::invoke_procedure_impl<void (tuio::CanBasicFingers<Graphic>::*)(long int, float, float, float, float, float), const boost::fusion::joint_view<boost::fusion::joint_view<boost::fusion::iterator_range<boost::fusion::vector_iterator<const boost::fusion::vector6<long int, float, float, float, float, float>, 0>, boost::fusion::vector_iterator<boost::fusion::vector6<long int, float, float, float, float, float>, 0> >, const boost::fusion::single_view<tuio::CanBasicFingers<Graphic>*> >, boost::fusion::iterator_range<boost::fusion::vector_iterator<boost::fusion::vector6<long int, float, float, float, float, float>, 0>, boost::fusion::vector_iterator<const boost::fusion::vector6<long int, float, float, float, float, float>, 6> > >, 7, true, false> 

这给了我们一些机会，而我可能会怀疑tuio::CanBasicFingers<>因为包含链包含tuioApp.hpp。如果tuio :: CanBasicFingers在tuioApp.hpp实例化的时候还没有定义，你会得到这个错误。